CN109020748A - Heavy metal soil-repairing agent - Google Patents
Heavy metal soil-repairing agent Download PDFInfo
- Publication number
- CN109020748A CN109020748A CN201810825840.XA CN201810825840A CN109020748A CN 109020748 A CN109020748 A CN 109020748A CN 201810825840 A CN201810825840 A CN 201810825840A CN 109020748 A CN109020748 A CN 109020748A
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- soil
- repairing agent
- guanite
- apatite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to soil remediation fields, are made of more particularly relate to heavy metal soil-repairing agent guanite, bone meal, apatite more particularly to the reparation field of heavy metal soil.It can be improved soil pH value, it is heavy metal-passivated, heavy metal activity is reduced, soil productivity is improved.And the soil-repairing agent preparation method is simple, preparation cost is low, has highly application value.
Description
Technical field
The present invention relates to soil remediation fields more particularly to the reparation field of heavy metal soil is more specifically
It is related to heavy metal soil-repairing agent.
Background technique
It is shown according to national Soil Pollution Investigation data, the total exceeding standard rate of national contaminated soil is 16.1%, wherein gently
Micro-, slight, moderate and serious pollution point ratio are respectively 11.2%, 2.3%, 1.5% and 1.1%.Domestic pollution type at present
Based on inorganic type, organic type takes second place, and compound pollution specific gravity is smaller, and wherein exceeded digit of inorganic pollution accounts for all exceeded
The 82.8% of point.
In terms of pollution distribution situation, soils in south china pollution is even more serious compared to the north；Yangtze River Delta, Zhujiang River triangle
The partial regions such as continent, Northeastern rust belt soil contamination problem is more prominent；Southwest, variable charge soil heavy metal pollution are super
It is larger to mark range；4 kinds of cadmium, mercury, arsenic, lead level of inorganic contaminants distributions are presented from northwest to the southeast, from northeast to southwestward
The situation gradually risen.Contaminated 1.5 hundred million mu of the arable land in the whole nation, accounts for the 8.3% of total area under cultivation, and wherein most is heavy metal-polluted
Dye.
Second national land investigation is the results show that there is nearly 40% farmland vegetable field soil weight in Pearl River Delta area portion city
Metallic pollution is exceeded, wherein 10% belongs to severe overweight.China causes grain drop in production to be more than 10,000,000 because of heavy metal pollution every year
Ton, contaminated by heavy metals grain add up at least 20,000,000,000 yuan of economic loss up to 12,000,000 tons.
Summary of the invention
The technical problem to be solved by the present invention is to mention aiming at the problem that current heavy metal gets worse soil pollution
For a kind of targetedly soil-repairing agent, thus heavy metal-passivated, reduction heavy metal activity.
In order to solve the above-mentioned technical problem, the invention discloses heavy metal soil-repairing agent, the soil-repairing agent be by
Guanite, bone meal, apatite composition, wherein the mass parts of each component are 4-8:3-4.5:15-25.
In a preferred technical solution, the guanite, bone meal, apatite mass parts be 4:3.5:2.5.
In another preferred technical solution, the guanite, bone meal, apatite mass parts be 5:3.2:1.8.
In another preferred technical solution, the guanite, bone meal, apatite mass parts be 5.3:2.8:1.9.
In addition, the invention also discloses the heavy metal soil-repairing agent being prepared by following preparation steps:
(1) dry at 75 DEG C that its moisture content is made to be lower than the 1% of quality by guanite, bone meal and apatite raw material, it protects simultaneously
The original activity of material is held, crosses 60 mesh sieve respectively；
(2) first guanite and bone meal are mixed according to the ratio, is put into blender, while certain water is added, keep water content 1%-
10%, after stirring 10-15min, it is slowly added into apatite, stirs 0.5-2min；
(3) material of (2) is entered in centrifugal granulator, reacts 5-15min, sieving forms the particle of partial size 1-3mm.
As further preferred, the screenings for not meeting Particle size requirements in step (3), which is reentered into centrifugal granulator, to be made
Grain.
In addition, heavy metal soil-repairing agent the answering in the reparation in heavy metal pollution farmland is also claimed in the present invention
With.
In a preferred technical solution, the present invention discloses the heavy metal soil-repairing agent and is applied in polluted agricultural land
Upper soll layer.Surface layer described here refers to be calculated since ground, the soil horizon of underground 0-20cm.
More preferably technical solution is that amount of application is the 0.6%-1% of soil dry weight.
As another purposes, the present invention is also claimed containing the compound of heavy metal soil-repairing agent disclosed in this invention
Fertilizer.
Here compound fertilizer is that heavy metal soil-repairing agent disclosed in this invention is commercially available with fertilizer efficiency by other
After compound fertilizer is mixed, it is co-administered, so as to play reparation and nutrient laden double effects.
Using technical solution disclosed in this invention, have the advantages that
(1) compared with traditional renovation agent, material therefor is from a wealth of sources, and preparation is simple, can reduce farmland soil heavy metals content,
Nutrient can also be provided for farmland, reduce the application of chemical fertilizer, bring economy, ecological benefits.
(2) this renovation agent can effectively repair the pollution of heavy metals in farmland copper, cadmium, zinc, lead, can also reduce soil well
The content of arsenic in earth.
Soil-repairing agent disclosed in this invention can be improved soil pH value, heavy metal-passivated, reduces heavy metal activity, mentions
High soil productivity.And the soil-repairing agent preparation method is simple, preparation cost is low, has very high popularization and application valence
Value.
Specific embodiment
In order to better understand the present invention, we in conjunction with specific embodiments further explain the present invention below
It states.
Embodiment 1
Heavy metal soil-repairing agent is prepared according to the following steps:
It is dry: dry at 75 DEG C that its moisture content is made to be lower than the 1% of quality by the guanite, bone meal and apatite raw material.
The original activity of material is kept simultaneously；(2) it is sieved: the raw material after drying being crossed into 60 mesh sieve respectively, while uniformly being mixed；
(3) ingredient: the quality proportioning is pressed, the raw material of respective weight is weighed respectively, is placed in blender；(4) it mixes: will be in blender
Raw material uniform stirring, mixing time 3-5 minutes, then pack or store.
Embodiment 2
Heavy metal soil-repairing agent is prepared according to the following steps:
(1) dry at 75 DEG C that its moisture content is made to be lower than the 1% of quality by guanite, bone meal and apatite raw material, it protects simultaneously
The original activity of material is held, crosses 60 mesh sieve respectively；
(2) first guanite and bone meal are mixed according to the ratio, is put into blender, while certain water is added, keep water content 1%-
10%, after stirring 10-15min, it is slowly added into apatite, stirs 0.5-2min；
(3) material of (2) is entered in centrifugal granulator, reacts 5-15min, sieving forms the particle of partial size 1-3mm.
Embodiment 3
According to the mass ratio of raw material: guanite 40, bone meal 35, apatite 25.The method preparation in Examples 1 and 2 is respectively adopted
Heavy metal soil-repairing agent 3A, 3B.
Weigh 500g cross 10 mesh for try air-dry soil, copper 751mg/kg, cadmium 2.83mg/kg, the zinc 1153mg/ of soil
Kg, lead 1672mg/kg, arsenic 136mg/kg.For renovation agent amount of application according to the 1% of dry ground weight, being converted into crop field dosage is 150kg/
Mu, that is, be separately added into guanite 2g, bone meal 1.75g, apatite 1.25g.It is respectively that renovation agent 3A and 3B and aforementioned soil is abundant
It after mixing, is put into plastic cup, 122mL deionized water is added, keeping field capacity is about 70%, uses preservative film on plastic cup
Aperture is sealed and opened, is put into constant incubator, keeping temperature is 25 DEG C.After culture 35 days, soil, a measurement soil huge sum of money are taken out
Belong to copper, cadmium, zinc, lead and arsenic.Measurement result:
Renovation agent 3A: copper 51.3mg/kg, cadmium 0.45mg/kg, zinc 213mg/kg, lead 268mg/kg and arsenic 18.3mg/kg, respectively
Reduce copper 93.16%, cadmium 94.09%, zinc 81.52%, lead 83.53%, arsenic 86.54%.
Renovation agent 3B: copper 45.2mg/kg, cadmium 0.25mg/kg, zinc 162mg/kg, lead 189mg/kg and arsenic 12.4mg/kg,
Copper 93.43%, cadmium 91.21%, zinc 85.95%, lead 88.69%, arsenic 90.88% are reduced respectively.
Embodiment 4
According to the mass ratio of raw material: guanite 50, bone meal 32, apatite 18.The method preparation in Examples 1 and 2 is respectively adopted
Heavy metal soil-repairing agent 4A, 4B.
Weigh 500g cross 10 mesh example 1 for trying to air-dry soil, renovation agent amount of application is converted into according to the 1% of dry ground weight
It is 150kg/ mus at crop field dosage, that is, is separately added into guanite 2.5g, bone meal 1.6g, apatite 0.9g.Respectively by renovation agent 3A
It after being mixed well with 3B and aforementioned soil, is put into plastic cup, 122mL deionized water is added, holding field capacity is about
70%, aperture is sealed and opened with preservative film on plastic cup, is put into constant incubator, and keeping temperature is 25 DEG C.After culture 35 days,
Take out soil, measurement heavy metal-polluted soil copper, cadmium, zinc, lead and arsenic.Measurement result:
4A: copper 59.1mg/kg, cadmium 0.41mg/kg, zinc 221mg/kg, lead 248mg/kg and arsenic 24.1mg/kg, reduce respectively
Copper 92.13%, cadmium 85.51%, zinc 80.83%, lead 84.75%, arsenic 82.28%.
4B: copper 48.5mg/kg, cadmium 0.21mg/kg, zinc 141mg/kg, lead 162mg/kg and arsenic 13.6mg/kg, drop respectively
Low copper 93.54%, cadmium 92.58%, zinc 87.77%, lead 90.31%, arsenic 90%.
Embodiment 5
According to the mass ratio of raw material: guanite 53, bone meal 28, apatite 19.The method preparation in Examples 1 and 2 is respectively adopted
Heavy metal soil-repairing agent 5A, 5B.
Weigh 500g cross 10 mesh examples 1 for try air-dry soil.Renovation agent amount of application is converted into according to the 1% of dry ground weight
Crop field dosage is 150kg/ mus, that is, is separately added into guanite 2.5g, bone meal 1.6g, apatite 0.9g.Respectively by renovation agent 5A and
It after 5B and aforementioned soil mix well, is put into plastic cup, 122mL deionized water is added, keeping field capacity is about 70%,
Aperture is sealed and opened on plastic cup with preservative film, is put into constant incubator, keeping temperature is 25 DEG C.After culture 35 days, take out
Soil, measurement heavy metal-polluted soil copper, cadmium, zinc, lead and arsenic.Measurement result:
5A: copper 51.2mg/kg, cadmium 0.38mg/kg, zinc 243mg/kg, lead 174mg/kg and arsenic 15.3mg/kg, reduce respectively
Copper 93.18%, cadmium 86.57%, zinc 78.92%, lead 89.59%, arsenic 88.75%.
5B: copper 41.3mg/kg, cadmium 0.24mg/kg, zinc 184mg/kg, lead 139mg/kg and arsenic 10.2mg/kg, drop respectively
Low copper 94.5%, cadmium 92.58%, zinc 87.77%, lead 90.31%, arsenic 90%.
Embodiment 6
3B, 4B, 5B are chosen respectively and carries out pot experiment, are set as CK, A1, A2, A3, are expressed as CK and apply according to recommended rate of fertilizer application
Fertilizer, A1, A2, A3 respectively correspond three above example proportion, and dose is the half of CK.Weigh example 1 air-dries soil for examination
5kg is put in basin alms bowl, and nominal takes 4 parts, and it is 1.06g that nitrogenous fertilizer is applied in CK with urea, and phosphate fertilizer is 3.33g, potash fertilizer with calcium superphosphate
It is 1.17g with potassium chloride；Urea 0.53g, calcium superphosphate 1.665g, potassium chloride 0.585g are applied in A1, A2, A3, renovation agent is thrown
Enter amount all in accordance with the 1% of dry ground weight, i.e., all applies tri- kinds of proportion renovation agents of 50g, deionized water is added in each basin alms bowl, keep
Field capacity 60%.Every basin plants 2 cave peanuts, and 2~3, every cave seed is colonized 2 plant after emerging, harvests fruit after mature
Reality simultaneously weighs weight, while measuring the heavy metal copper in soil, cadmium, zinc, lead and arsenic.Measurement result: the peanut of CK, A1, A2, A3
Fruit weight is respectively as follows: 14.32g, 15.41g, 14.37g, 15.08g；Copper, cadmium, zinc, lead and arsenic content are respectively in CK soil
724 mg/kg, cadmium 2.56mg/kg, zinc 1021mg/kg, lead 1529mg/kg, arsenic 129mg/kg.Copper, cadmium, zinc, lead in A1 soil
It is respectively 49.1mg/kg, cadmium 0.27mg/kg, zinc 179mg/kg, lead 166mg/kg, arsenic 13.8mg/kg with arsenic content.A2 soil
Middle copper, cadmium, zinc, lead and arsenic content are respectively 43.1mg/kg, 0.21 mg/kg of cadmium, zinc 135mg/kg, lead 181mg/kg, arsenic
11.5mg/kg.In A3 soil copper, cadmium, zinc, lead and arsenic content be respectively 40.3mg/kg, 0.23 mg/kg of cadmium, zinc 156mg/kg,
Lead 173mg/kg, arsenic 14.3mg/kg.
The foregoing is a specific embodiment of the present invention.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. heavy metal soil-repairing agent, it is characterised in that: the soil-repairing agent is made of guanite, bone meal, apatite,
The mass parts of middle each component are 4-8:3-4.5:15-25.
2. heavy metal soil-repairing agent according to claim 1, it is characterised in that: the guanite, bone meal, apatite
Mass parts are 4:3.5:2.5.
3. heavy metal soil-repairing agent according to claim 1, it is characterised in that: the guanite, bone meal, apatite
Mass parts are 5:3.2:1.8.
4. heavy metal soil-repairing agent according to claim 1, it is characterised in that:, the guanite, bone meal, apatite
Mass parts be 5.3:2.8:1.9.
5. heavy metal soil-repairing agent according to claim 1, it is characterised in that: the heavy metal soil-repairing agent is logical
Following preparation steps are crossed to be prepared:
(1) dry at 75 DEG C that its moisture content is made to be lower than the 1% of quality by guanite, bone meal and apatite raw material, it protects simultaneously
The original activity of material is held, crosses 60 mesh sieve respectively；
(2) first guanite and bone meal are mixed according to the ratio, is put into blender, while certain water is added, keep water content 1%-
10%, after stirring 10-15min, it is slowly added into apatite, stirs 0.5-2min；
(3) material of (2) is entered in centrifugal granulator, reacts 5-15min, sieving forms the particle of partial size 1-3mm.
6. heavy metal soil-repairing agent according to claim 5, it is characterised in that: step does not meet Particle size requirements in (3)
Screenings be reentered into centrifugal granulator and be granulated.
7. the heavy metal soil-repairing agent is in the reparation in heavy metal pollution farmland described in any one of claim 1-6
Application.
8. application according to claim 7, it is characterised in that: the heavy metal soil-repairing agent is applied in polluted agricultural land
Upper soll layer.
9. application according to claim 7, it is characterised in that: amount of application is the 0.6%-1% of soil dry weight.
10. the compound fertilizer containing heavy metal soil-repairing agent described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825840.XA CN109020748A (en) | 2018-07-25 | 2018-07-25 | Heavy metal soil-repairing agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825840.XA CN109020748A (en) | 2018-07-25 | 2018-07-25 | Heavy metal soil-repairing agent |
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Family
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| CN201810825840.XA Pending CN109020748A (en) | 2018-07-25 | 2018-07-25 | Heavy metal soil-repairing agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678626A (en) * | 2019-01-28 | 2019-04-26 | 湖南恒凯环保科技投资有限公司 | The soil conditioner and the preparation method and application thereof repaired for mercury pollution farmland |
| CN111484852A (en) * | 2020-04-22 | 2020-08-04 | 吴秀英 | Special soil remediation particle for plants |
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Application publication date: 20181218 |